CN1021255C - Inspecting glass containers for line-over finish defects - Google Patents
Inspecting glass containers for line-over finish defects Download PDFInfo
- Publication number
- CN1021255C CN1021255C CN89102209A CN89102209A CN1021255C CN 1021255 C CN1021255 C CN 1021255C CN 89102209 A CN89102209 A CN 89102209A CN 89102209 A CN89102209 A CN 89102209A CN 1021255 C CN1021255 C CN 1021255C
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- CN
- China
- Prior art keywords
- light
- sealing surfaces
- equipment
- fiber
- receiver
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- Expired - Fee Related
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/90—Investigating the presence of flaws or contamination in a container or its contents
- G01N21/9054—Inspection of sealing surface and container finish
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/47—Scattering, i.e. diffuse reflection
- G01N21/4738—Diffuse reflection, e.g. also for testing fluids, fibrous materials
- G01N21/474—Details of optical heads therefor, e.g. using optical fibres
- G01N2021/4742—Details of optical heads therefor, e.g. using optical fibres comprising optical fibres
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- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
Apparatus for detecting line-over defects at the finish of a glassware container. A bifurcated fiber optic bundle includes sender and receiver fiber branches; one of the branches terminates at a modulated visible red high intensity LED light source, the other at a photosensor. The non-bifurcated, probe end of the fiber optic cable terminates in a rectangular pattern of sending and receiving fibers in a random mix. The probe end of the fiber optic bundle is positioned directly over the container finish and pointed straight down. An intervening lens assembly produces a focused 1:1 image of the rectangular pattern at the bottle finish with the long axis of the rectangle oriented radially across the finish. An electronic assembly modulates the LED, demodulates the photodetector output, and detects sharp reductions in the intensity of light reflected back to the receiver fibers, indicative of line-over defects.
Description
The present invention relates to the detection of connectivity line defect on glassware vessel port end face (Line-over defect), relate in particular to the use of optical device for this purpose.
So-called " through track " defective is a FAQs during glassware is made, and another common name of through track defective is " a shearing lines " and " nit striped ".This defective is a kind of thin groove, and it stretches along the sealing surfaces of glass container mouth end face radially, sees Fig. 1.In whole industry member, think that always detecting this defective is one of worst and the most difficult problem.At various sodas, for example, the capping of container for drink can not seal up these trickle grooves, treats one period, and carbonic acid gas leaks out, and beverage is become run gas.The food jar is the field of another strict demand, if owing to due to this defective, make the sealing variation, food just may be polluted.Baby food industry is concerned about especially whether this through track defective exists.
It is believed that, when loader flows by shear, melt the attitude frit and sheared, remain in the generation that the cold glass of linearity that melts on the attitude frit causes this groove at frit.For example see United States Patent (USP) U.S4,515,002 is described.
In recent years, have ever made many effort and go to develop the equipment that detects glass container through track defective, so that choose bad bottle from production line accurately.But most of such device can pair go out big measured container, and can leak the container that has defective of suitable percentage.Existent method comprises mechanical sensing device, for example at United States Patent (USP) U.S3, and 879,993 and U.S3, those devices disclosed in 395,573.Various optical meanss have also been adopted.A kind of method is to utilize the light of mirror focusing to be mapped to the vessel port end face, wherein, the existence of through track defective will cause that the light of focusing is reflected, and the refraction direction of light is different from the direction of light that does not have defective, can utilize the deflection of the light sensor probes of direct placement to this light direction.For example: see United States Patent (USP) U.S 3,302,787 and U.S 3,107,011.Another kind method is disclosed in United States Patent (USP) U.S 4,606,634, utilizes a kind of diffused light source of plane, produces a kind of image of any through track defective with TV camera.
The third method, the pattern that is among the present invention basically to be adopted makes the light downward direction be mapped to sealing surfaces, surveys the light that is reflected, whether defectiveness exists so that survey.United States Patent (USP) U.S 3,880,750 described systems focus on strong incandescence hot spot and the wheel rim by container, utilize the optical sensor composite set to receive the light of reflection, cooperate electronics to handle to survey departing from of reflected light and normal incident light.The frequency filtering of photodetector signal is removed the light signal of normal incidence, and the flaw indication of each different defect types is provided.Light source and photo-detector composite set become complementary acute angle to place with respect to the plane of sealing surfaces.
Another patent of utilizing the reflected light method is United States Patent (USP) U.S 4,488,648, and it and the present patent application are common the transfers.This patent is selected a kind of DC light source for use, acutangulates placement with respect to sealing surfaces, and photo-detector is placed with acute angle equally, and the through track defective produces a kind of abated effect-promptly a kind of " blackening " of light.This system and U.S discussed above 3,880,750 can not successfully solve by utilizing reflected light to carry out some problem that the through track defects detection is brought.The side wall angle of through track groove is can not indicate fully, the angle of a sidewall can be steep, and another opposing sidewalls can be shallow, being difficult to make reliably the light of reflection to return from these defectives is mapped on the sensor, because these defectives are changing to next container from a container, can not indicate fully.Fig. 2 A, 2B and 2C illustrate the orientation (when the inside of bottle is seen) of three types through track groove.Other problem that adopts this reflected light method to exist is a foul, dust and coarse port surface, they may make light also retroeflection to sensor.
Therefore, basic purpose of the present invention is to provide a kind of optical detection system of more accurate through track defective.Another relevant purpose is to improve the number percent of through track defect detection, and another relevant purpose is to reduce " mistake is surveyed ", for example: since dust, the number percent of foul and the coarse port surface error signal that produces.
In described in the above content and the additional purpose, the present invention adopts a kind of fibre optics scan head, is mapped to glass container mouth end face downwards, and this scanner head comprises a kind of fibre bundle of bifurcated and optics and element electronics of collaborative work.The fibre bundle of bifurcated has transmitter and receiver, and they comprise transmission respectively and receive optical fiber, and linking portion converges two groups of fibers at the end of probe.Such fibre bundle has the light source of the transmitter fiber that is used to throw light at a crotch, at another crotch, there is one to be used to produce the photodetector devices of representative by the light intensity output signal of receiver fiber transmission.Scanner head also comprises a lens combination, is used to transmit the light from the directly downward directive vessel port end face of transmitter that is positioned at probe end, and receives the reflection from container end face simultaneously, and partial reflection is by the receiver fiber capturing of probe end.The configuration with elongated figure is made in the end of probe, utilize lens combination this figure imaging on sealing surfaces, make its length direction of figure just in time radially by the vessel port end face.
According to a preferred embodiment of the invention, make sound end constitute a kind of elongated rectangular configuration, its figure imaging is to vessel port end face face, and its major axis radially strides across sealing surfaces.Best, lens combination make this figure slightly the imaging of out of focus ground on sealing surfaces.Each fiber of the fibre bundle of sound end is mixed into a kind of random fibrous bundle (sending the random fiber figure of fiber and reception fiber) mutually in a kind of favourable mode.
Another aspect of the present invention relates to light source, photo-detector optics system and electronic circuit.Light source is preferably formed with the red light portion of spectrum better by the visible luminescent diode of a kind of high strength (LED).For fear of the interference of surround lighting, can modulate this LED, and the output of photo-detector is carried out demodulation to produce the simulating signal that a kind of representative is detected light intensity.Scanning vessel port end face, while rotary container or scanner head, therefore, system can provide a kind of expression to be detected the waveform that light intensity changes in the whole cycle of scanning around sealing surfaces.
Observe, adopt this detection technique to distinguish the through track crackle and dust, foul, rough spot pattern and the ground unrest that produce quite tangible peak value effectively.The signal that is provided can further be handled, and is used for selecting container.
Above-mentioned and extention of the present invention can be specifically described by describing following preferred embodiment in detail in conjunction with the accompanying drawings:
Fig. 1 represents the skeleton view of the glass bottle opening end face of coherent logical linear recess;
Fig. 2 A-2C represents to see in container and looks, and has three kinds of different partial elevation view that connect the glass container of linear recess orientation;
Fig. 2 A represents a kind of have steep right wall, the groove of shallow left wall;
Fig. 2 B represents a kind of groove with symmetrical sidewall;
Fig. 2 C represents a kind of have shallow right wall, the groove of steep left wall;
Fig. 3 represents suitable one during with the bottle mouth end face that counterclockwise rotates, according to the preferred embodiment of the invention the synoptic diagram of whole detection system;
Fig. 4 is a partial plan view from the seal of vessel surface that top direction is seen, the resembling of the rectangular light of presentation graphs 3 detection systems;
The light source of Fig. 5 presentation graphs 3 described systems, light detector and relevant electronics synoptic diagram partly;
Fig. 6 A-6C is that expression entire container mouth end face is through representative curve tested light intensity, treated photodetector output signal behind the single pass;
Fig. 6 A represents a kind of typical signal-noise waveform;
Fig. 6 B represents to comprise the scanning stretch-out view that connects the wire flaw indication;
Fig. 6 C represents that characterizes a waveform that connects line defect and two kinds of signals of dust.
Fig. 3 represents the structural drawing of the pick-up unit 5 of the most preferred embodiment according to the present invention.Pick-up unit 5 comprises the fiber optics probe 30 on the open end 10 that points to glass container 7.In illustrated embodiment, container 7 rotates with respect to probe 30, makes probe 30 circular scans of carrying out sealing surfaces 11, and fiber optics probe 30 comprises 31,33 and bound fractions 35 of fiber of bifurcated, and bifurcated 31 comprises that light sends fiber; Bifurcated 33 is loaded with optical receiving fiber; Coupling part 35 transmission of mixing is arranged and receive fiber they to terminate in probe terminal 40, the mode with random distribution is stranded mutually fully at 40 places for fiber.Sound end 40 is placed in the probe socket 46, and stops at elongated rectangular slits 45 places.Probe socket 46 is used for harmonizing and fiber illuminated end 45 is orientated on sealing surfaces 11, directly forms below elongated to resemble 20.1: 1 lens combination 43 comprises lens 41 and 42, be convenient on sealing surfaces 11, produce out of focus a little sound end 45 resemble 20.Be desirable to provide a kind of image of out of focus a little,, rather than only get back to and send on the fiber so that the light of getting back to probe end 40 places from the reflection luminous energy of sealing surfaces sends and receive fiber on the two.
Now referring to the partial plan view of sealing surfaces shown in Figure 4 11, probe end resembles 20 and comprises that having length is that L, width are that the elongated rectangular of T resembles, and size L is a bit larger tham the inwall 12 of vessel port end face and the thickness between the outer wall 13.In specific embodiments of the invention, L equals 0.154 inch, and T equals 0.012 inch.Selecting this L value is to conform to the most frequently used thickness of glass bottle opening end face, and selecting this T value is to be the letter one that the obtains ratio of making an uproar.Rectangle image 20 its major axis orientations are radially consistent with sealing surfaces 11.
Fig. 5 schematically illustrates one group of parts of the signal Processing electronics device 50 that is used for Fig. 3, and the light source of emission fiber 31 is the visible LED35 of high strength, and emission light is in the red light portion in visible spectrum district.The led light source device can be modulated at different frequencies, and in the mission life that prolongs, provide one have minimum drift, the output of highlight strength continuous light.Should be appreciated that, also can adopt other light source according to the optical characteristics of vessel port end face 10.Optical receiver 37 is photistor elements, and its spectral response district and LED35 are complementary, and the output of photistor is after amplifier 54 amplifies, by bandpass filter 55 demodulation of demarcating, with the modulating frequency by visible red LED35.Low-pass filter 56 takes out the gradient (Slope) signal from be subjected to modulated carrier signal, gradient signal obtains at 57 places amplifying.Be fed to sample/hold circuit 58 through the gradient signal that amplifies, deliver to mould one number converter 59 then, by 59 pairs of these signal integrations of converter and signal digitalized to each sampled point.When compiling the signal of this rotary container 7, the integration gradient signal that microprocessor 60 is analyzed from circuit 50.Microprocessor 60 under suitable situation, can start device for eliminating 75 via rejecting driver 70, so that pick out this container when the processing signals of container 7 shows when having unacceptable through track defective.
Fig. 6 A-6C is various curve maps or the demonstration of handling the simulating signal that electronic installation 50 provides, is illustrated in the light quantity of the difference of sweep spacing by the LED of fiber illuminated 30 reflected backs.The waveform of Fig. 6 A-6C is shown on the oscillograph 80, and oscillograph receives the output by the amplifier 57 in the circuit 50 of Fig. 5.A kind of typical signal-noise waveform of the curve representation of Fig. 6 A, it is included in 81 places and sink by the path that is positioned at the through track defective under the fiber optics probe 30 is caused.Its abscissa scale of the curve representation of Fig. 6 B is than the every scale 10ms of the scale of Fig. 6 A, and expanding to every scale is that the signal value that is produced by the through track defective behind the 500 μ s descends 83.Curvilinear figure when Fig. 6 C represents that getting every scale is 2.5ms, wherein sinking 85 and 87 is caused by dust particle, and signal decline 89 is by due to the through track defective.To see thus, and connect line defect and cause signal level quite significantly to descend.Fig. 6 A-6B shows that the through track defect detecting system can repeatedly detect the ability of real through track defective selectively, reduces simultaneously because the loss of other vessel port end face indentation (in this problem of not considered) the good container that reason caused.
Referring to the embodiment of above-mentioned special use the time,, can make various changes and modifications obviously and be unlikely and depart from spirit of the present invention for the professional of this technical field.So protection scope of the present invention is determined by following claim.
Claims (10)
1, a kind of inspection machine for the line defect that connects glass container mouth end face is characterized in that this equipment is made up of following each several part:
A scanner head, by comprising the branched light guide fibrous bundle that transmitter fork and receiver fork and receiver are pitched and containing described transmitter and the coupling part of receiver fiber is formed, described transmitter and receiver bifurcated contain transmission optical fiber respectively and receive optical fiber, and described coupling part ends at probe end;
A light source is used to the transmitter fiber that throws light on, and this light source provides the A M light of selected frequency;
A lens combination, be used for from the light imaging of probe end emission to described sealing surfaces, and be used for the light by described sealing surfaces reflected back is sent to described sound end;
A treating apparatus comprises the light-detecting device that is used to produce the output signal of representing the light intensity of being transmitted by the receiver fiber basically and can transfer the device of described light intensity output signal;
Described sealing surfaces is essentially a plane, and sound end is provided with perpendicular to the plane of sealing surfaces, and its position makes described smooth imaging from sound end on described surface.
2, the equipment that is limited by claim 1 is characterized in that also being included in output signal and drops to predetermined threshold and be used to remember the treating apparatus of depositing when following.
3, the equipment that is limited by claim 1 is characterized in that sound end constitutes elongated figure, and on sealing surfaces, the major axis of its figure radially is orientated on sealing surfaces lens combination elongated figure imaging.
4, the equipment that is limited by claim 3 is characterized in that elongated figure comprises rectangular graph.
5, the equipment that is limited by claim 3 is characterized in that sealing surfaces is one to have the ring of outer edge, and elongated figure resemble the inside and outside edge that stretches out sealing surfaces.
6, the equipment that limits by claim 1, the figure that it is characterized in that sound end a little out of focus ground imaging on sealing surfaces.
7, the equipment that is limited by claim 1 is characterized in that light source is made up of high-intensity visible light light emitting diode LED.
8, the equipment that is limited by claim 7 is characterized in that the visible wavelength of LED concentrates on the red light portion of visible spectrum.
9, the equipment that limits by claim 1, be used to provide the circumference inspection on seal of vessel surface, this equipment also comprises make in described container and the described scanner head one with respect to another device that rotates, thereby described scanner head can scan described sealing surfaces in the mode of circumference.
10, by the equipment that claim 1 limited, it is characterized in that each fiber illuminated comprises the transmission of about equal number and receives fiber, they mix in random mode at the sound end of described light beam.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US161,623 | 1988-02-29 | ||
| US07/161,623 US4929828A (en) | 1988-02-29 | 1988-02-29 | Inspecting glass containers for line-over finish defects with bifurcated fiber optic bundle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1037217A CN1037217A (en) | 1989-11-15 |
| CN1021255C true CN1021255C (en) | 1993-06-16 |
Family
ID=22581981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN89102209A Expired - Fee Related CN1021255C (en) | 1988-02-29 | 1989-02-28 | Inspecting glass containers for line-over finish defects |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US4929828A (en) |
| EP (1) | EP0331290B1 (en) |
| JP (1) | JPH01253642A (en) |
| CN (1) | CN1021255C (en) |
| AU (1) | AU610465B2 (en) |
| BR (1) | BR8900820A (en) |
| CA (1) | CA1310717C (en) |
| DE (1) | DE68905847T2 (en) |
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| US5264961A (en) * | 1989-10-10 | 1993-11-23 | Unisys Corporation | Techniques for trapping beams of infra-red energy |
| US5085515A (en) * | 1990-02-08 | 1992-02-04 | Mitsubishi Metal Corporation | Method and apparatus for inspecting quality of manufactured articles |
| DE9013892U1 (en) * | 1990-10-05 | 1991-09-26 | Fa. Hermann Heye, 3063 Obernkirchen | Device for testing for light-reflecting defects |
| JP2783468B2 (en) * | 1991-05-09 | 1998-08-06 | 和泉電気株式会社 | Textile defect detector |
| DE4200971C2 (en) * | 1992-01-16 | 1997-08-07 | Krieg Gunther | Method and device for the detection and identification of pollutants in beverage bottles in filling lines |
| US6614529B1 (en) | 1992-12-28 | 2003-09-02 | Applied Materials, Inc. | In-situ real-time monitoring technique and apparatus for endpoint detection of thin films during chemical/mechanical polishing planarization |
| US7037403B1 (en) * | 1992-12-28 | 2006-05-02 | Applied Materials Inc. | In-situ real-time monitoring technique and apparatus for detection of thin films during chemical/mechanical polishing planarization |
| US5489987A (en) * | 1994-04-07 | 1996-02-06 | Owens-Brockway Glass Container Inc. | Container sealing surface inspection |
| US5581355A (en) * | 1995-03-08 | 1996-12-03 | Owens-Brockway Glass Container Inc. | Finish meter for detecting and measuring a metal oxide coating thickness on a sealing surface of a glass container and method of using |
| CN1037027C (en) * | 1995-10-24 | 1998-01-14 | 南京航空航天大学 | Two-dimensional optical flaw detecting and displaying method and device |
| US5896195A (en) | 1997-05-15 | 1999-04-20 | Owens-Brockway Glass Container Inc. | Container sealing surface area inspection |
| US6043880A (en) * | 1997-09-15 | 2000-03-28 | Becton Dickinson And Company | Automated optical reader for nucleic acid assays |
| US6597450B1 (en) | 1997-09-15 | 2003-07-22 | Becton, Dickinson And Company | Automated Optical Reader for Nucleic Acid Assays |
| US6256095B1 (en) | 2000-01-21 | 2001-07-03 | Owens-Brockway Glass Container Inc. | Container sealing surface area inspection |
| JP2001221747A (en) * | 2000-02-03 | 2001-08-17 | Suntory Ltd | Imaging method of liquid filling container and device |
| CN1653338A (en) * | 2002-05-17 | 2005-08-10 | 贝克顿·迪金森公司 | Automated system for isolating, amplifying and detecting a target nucleic acid sequence |
| FR2846423B1 (en) * | 2002-10-25 | 2005-12-23 | Bsn Glasspack | METHOD AND DEVICE FOR DETECTING SURFACE DEFECTS PRESENTED BY UNR RING OF A TRANSPARENT OR TRANSLUCENT REVOLUTION CONTAINER |
| US6903814B1 (en) | 2003-03-05 | 2005-06-07 | Owens-Brockway Glass Container Inc. | Container sealing surface inspection |
| US20060092410A1 (en) * | 2004-10-28 | 2006-05-04 | Owens-Brockway Glass Container Inc. | Container inspection by directly focusing a light emitting die element onto the container |
| FR2901022B1 (en) * | 2006-05-10 | 2008-08-08 | Saverglass Soc Par Actions Sim | DEVICE AND METHOD FOR DETECTING DEFECT IN A GLASS ARTICLE RING. |
| JP5090087B2 (en) * | 2007-06-29 | 2012-12-05 | 日本クラウンコルク株式会社 | Cap winding angle inspection device for bottle and cap assembly |
| US10012598B2 (en) | 2015-07-17 | 2018-07-03 | Emhart S.A. | Multi-wavelength laser check detection tool |
| CN105067640A (en) * | 2015-08-19 | 2015-11-18 | 广州市盛通建设工程质量检测有限公司 | Detection device for transverse cracks and longitudinal cracks of glass bottle opening |
| CN108920989B (en) * | 2018-06-29 | 2022-03-08 | 北京润科通用技术有限公司 | Parameter determination method and system |
| CN109297528A (en) * | 2018-11-28 | 2019-02-01 | 徐州嘉恒玻璃制品有限公司 | A kind of detection device of medicine bottle |
| JP7306011B2 (en) * | 2019-03-27 | 2023-07-11 | 東洋製罐株式会社 | Plunger device and palletizer |
| CN110060239B (en) * | 2019-04-02 | 2021-05-07 | 广州大学 | Defect detection method for bottle opening of bottle |
| CN113093313A (en) * | 2021-04-13 | 2021-07-09 | 杭州安誉科技有限公司 | Optical lens, preparation method thereof and application thereof in branched optical fiber device |
| CN115389538B (en) * | 2022-08-09 | 2023-12-29 | 深圳市埃芯半导体科技有限公司 | X-ray analysis device and method |
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| US3176842A (en) * | 1960-10-19 | 1965-04-06 | Owens Illinois Glass Co | Inspecting hollow containers for line-over-finish defects |
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-
1988
- 1988-02-29 US US07/161,623 patent/US4929828A/en not_active Expired - Fee Related
- 1988-12-28 CA CA000587070A patent/CA1310717C/en not_active Expired - Fee Related
-
1989
- 1989-01-12 AU AU28461/89A patent/AU610465B2/en not_active Ceased
- 1989-02-01 DE DE8989300976T patent/DE68905847T2/en not_active Expired - Fee Related
- 1989-02-01 EP EP89300976A patent/EP0331290B1/en not_active Expired - Lifetime
- 1989-02-22 JP JP1042925A patent/JPH01253642A/en active Pending
- 1989-02-23 BR BR898900820A patent/BR8900820A/en not_active Application Discontinuation
- 1989-02-28 CN CN89102209A patent/CN1021255C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE68905847T2 (en) | 1993-07-15 |
| CN1037217A (en) | 1989-11-15 |
| BR8900820A (en) | 1989-10-17 |
| EP0331290A2 (en) | 1989-09-06 |
| EP0331290A3 (en) | 1990-08-01 |
| US4929828A (en) | 1990-05-29 |
| JPH01253642A (en) | 1989-10-09 |
| CA1310717C (en) | 1992-11-24 |
| DE68905847D1 (en) | 1993-05-13 |
| EP0331290B1 (en) | 1993-04-07 |
| AU610465B2 (en) | 1991-05-16 |
| AU2846189A (en) | 1989-08-31 |
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